About this book

Book for behavioural ecologists and evolutionary biologists interested in the biological implications of sperm competition.

immense amount of information ... carefully documented - Nature; ...the book is difficult to put down. There can be few people who are not fascinated by their own sexual behaviour and the attempt here is to place the whole thing in an evolutionary framework determined, and driven, by sperm competiton. Baker and Bellis may not be always right, but it is a hell of a good story. - Heredity; Human Sperm Competition: Copulation, Masturbation and Infidelity...opens up a previously unexplored area of research in human sexuality...The result is something remarkable - a genuinely new book about sex. - The Independent; For years I have not read such an important and capivating book which on one hand deals with everyday behaviour and on the other hand connects with the best of the Darwinian approach. - Galileo; Their ideas are novel and their research has taken them into areas where many others have been reluctant to tread. Trends in Ecology and Evolution.

Contents

Sex, coyness and promiscuity - the evolution of sperm competition; legacies from the age of reptiles - copulation, flowback and the female orgasm; the mammalian inheritance - maternal care, family planning and sperm polymorphism; the mammalian inheritance - masturbation, homosexuality and push buttons; the primate inheritance - paternal care, sexual crypsis and the facade of monandry; the modern scenario - contraception, fecundity and the illusion of conscious control; levels of human sperm competition; optimizing inseminates - ejaculate adjustment by males and the function of masturbation; ejaculate manipulation by females and the function of the female orgasm; sperm polymorphism and the kamikaze sperm hypothesis; human fertility and infertility - the kamikaze perspective; final thoughts.

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